Thread-parter and thread-clamp.



E. S. STIMPSON.

THREAD PARTER AND THREAD CLAMP.

APPLICATION FILED APR.30| 1915.

` 1,1 98,787. Y Patented sep@ 19,1916.

'5 l/ Z( @7726191565: [7212 71,60 7". @1; www @ff Ecwarc zmmz UNITED STATES. PATENT CEEICE.

EDWARD s. lsTIMPsoN, or HOPEDALE, MASSACHUSETTS, ASSIGNOE Tov DRAPER COMPANY, or HCPEDALE, MASSACHUSETTS, A CORPORATION or MAINE.`

THREAD-PARTER AND THREAD-CLAMP.

Specification of Letters Patent.

Patented sept. 19, 1916.

l l Application filed April 30, 1915. Serial N o. 25,036.

a citizen ofthe United States, residingat IIopedale, county of forcester and` State' of Massachusetts, have invented an Improvement in Thread-Parters and Thread- Clamps, of which the following description, in connection'with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

The present invention relates to thread parting andclamping means for looms.

In filling replenishing looms of the feeler type, wherein mechanism is employed for introducing a fresh supply of filling to a running shuttle or substituting a filled shuttle for the one in use, the end 5 of the old filling extends from the cloth to the shuttle containing the carrier or bobbin to be abandoned, and it is desirable that this end of filling be removed from the loom `so that it shall not be carried into the shed. Means have been provided to this end, among which may be mentioned that eX- ploited in the patent to Northrop and Stimpson, No. 641,792, January 23, 1900, and that in the patent to Draper, No.

683,423, September 24, 1901. In the former,

the thread parter has associated therewith a thread clamp and both are moved toward the filling'end will be held by the clamp a sufficient length of time to insure being parted by the temple. thread parter and then released while still in such vfront position, so that danger of the piece of detached filling being Caught and carried into the shed is avoided. f Another important feature of the present invention consists in providing simple but effective means for opening the thread parter and clamp while they are in initial or front position.

The relation of the thread parter and -thread clamp and the control of the latter the lay upon call for filling replenishment to part and clamp the filling andV then move the fillingendv toward the front of the loom for the action ofthe temple thread parter.

i The loose end of filling is retained by the clamp until another call .for replenishment, I

whereupon, as the .parter and clamp again move toward the lay, they are opened to repeat the operation thus freeing the old piece of filling. In the Draper patent referred V to, and others, such as Nos. 67 7 ,096; 677,097;

677,098; dated June 25, 1901, the thread parter and clamp have had associated with them a thread catchertoengage the filling end and retain it after it has been released bythe clamp.

In the presentv invention, the thread parter and thread clamp may have the characteristic movement from the front of the loom toward the lay to clamp and part the filling upon call for filling replenishment, and then back again tol initial position as in the patents noted, and, in connection therewith, the invention contemplates that after return to initial position at the front of the loom,

by the former, as well as various other important features of the invention, will be made clear from the following description and accompanying drawings of a good form of means for lcarrying the invention into practical effect, it being understoodthat in its true scope the invention is defined by the claims.

In the drawings :-Figure 1 is a side elevation of a thread parter and thread clamp embodying the present invention, only so much of the lay and front of the. loom being illustrated as to make generally clear the relation of parts; Fig. 2 is a plan view showing the thread parter and thread clamp in their associated relation, the carrying arm being broken away; Fig. 8 shows the thread parter and thread Clamp closed upon the filling thread by the lay as the latter beats up; Fi-g. 4 is an end view of the thread parter and thread clamp looking in the direction of the arrow, Fig. 1, and showing the thread parter at or about the time it is parting the filling and the clamp in holding position; and Fig.. 5 lis alsection on the line 5+5, Fig. 3. l

The loom frame may be of any appropriate character and construction to support the voperating parts, only a portion of one of the uprights 1 being herein illustrated for the'purpose of clearness. Said upright 1 may be surmounted bythe usuall breast beam, but as these matters are all well understood by those skilled in the art, illustration is not necessary.

vAdjustably mounted upon'the upright 1 is the bracket 2 having the rearwardly-projecting arm 3 lcarrying a stud 4 with respect to which the shuttle feeler armor carrier 5 is pivotally mounted. This shuttle yfeeler arm 0r Carlier 5 together with its projecting to an operative position nearer the back ofv the loom upon call for `filling replenishment in order to position the shuttle feeler and thread parter and thread clamp for engage ment with the filling extending between .the

-cloth selvage and shuttle.` Any appropriate means may be employed for.y thus giving to the shuttle feeler arm or carrier 5 its movement to andfrom-operative position, and an appropriate form of means to this end is fully described in the patent hereinbefore mentioned, andy since such means forms no essential. part of the `present invention, and is Well understood by those skilled in the art,

further illustration and description herein is unnecessary.

The rear end portion of the shuttlezfeeler arm or carrier 5 is provided with a shoulder 8 and a thread rest 9, the front and side portions 10 and 11 of the thread rest 9 being beveled or out aWay,.as indicated in Fig. 2, in order that the lling thread leading from the cloth selvage to the shuttle may readily position itself upon the rest 9 and be guided thereto by the inclined portions 10 and 11.

The present invention contemplates that upon call for filling replenishment, the shuttle feeler arm or carrier 5 shall be moved from its front or inoperative position to its rear or operative position to act upon the filling thread, and that there shall be provided a thread parter to part the filling and a thread clamp to clampvthe end of the filling leading from the vcloth selvage sok that upon the return of theshuttle feeler arm or carrier 5 to its front or inoperative position, the end of the filling thread leading from the cloth selvage shallv be carried forward and held in position for the action ofY the usual temple thread parter.

In the present formA of the invention, the thread parter comprises a fixed blade 12 secured to the endportion of the shuttle feeler arm or carrier 5, substantially as indicated in Figs. 2 and 5, and a relativelyimovable member 13 Which maybe appropriately sup-` ported Ybythe shuttle feeler arm or carrier for relative movement With respect to the companion member 12 of the thread parter `to part the filling.

In the present illustrated form of the.

thread parter, the member 13 is formed as a pivoted member pivotally supportedbyl a bolt 14 which passes through the end of the shuttle feeler armor carrier. 5, thenthro-ugh the pivotedl member 13,.of.the parter and rfinally. through an overlying plate' 15 between AWhich and the member 12 of the lrparter, the pivoted -Inember 13y may rock.

The bolt 14 is provided with ashoulder which bears exterior-ly upon a spring Washer 16 resting against the plate 15,the construction being such that the spring Washer 16 acting through the plate 15 upon the movable member of the thread parter retards `too free movement of said movable member.

In order further to establish the associated .relation of the shuttle feeler arm or carrier and the members of the thread parter and the overlying plate 15, anotherbolt or pin 17 may-be passed througlrthe'partsand into the end of the shuttle feelerarm or carrier,

substantially as yindicated in Fig. l2.

It is desirable that the movablel member.

ofthe thread parter, shall have a limited movement, and to this endv itis provided With an Vopening18fthrough Whichthe pin 17 is passed, and which serves as a limiting stop for the opening andclosing movements.

which is adapted to be engaged by a bunter 20 on the lay 21 as the latter beats up, When the thread parter is in its reark or operative position, the construction being suchthat the thread having been introducedbetween the members of the threadparter, the'relative movement of the members of the parter Vunder the conditions noted, Will cause the filling thread to be parted betweenthe cloth selvage and shuttle. When the lay beats up and the parter is in operative position, the inclines v10` and 11 guidethe filling-thread tothe rest 9 upon which it is supported during the action of the parter. The character of thread parter described has been found Well adapted for it-s purpose, but the invention isnot necessarily limited thereto andincludes other forms of thread parters which' may be associated With features of the c present invention.

Mounted upon the tail end portionV 19of the member 13 of the thread parter, is a Weight 22 which, when the thread parter has returned to inoperative position, serves to overcome the retarding influenceof the spring Washer 16 upon thejy movable. member of the parter, and, under the vibrationsof. the loom, to open :orseparate the members a of the thread parter.

Theplate 15 has formed kas a part thereof,

, or secured thereto, a lugv 23` provided with 95 partei-has a down-turned: tail 'portion 19V to the upper surface thereof, substantially as indicated in Fig. 3, and a back wall 27 provided with a slot 28 by which the movements of the thread clamp, to be presently described, may be guided.

The present invention contemplates'that after the thread parter has parted the filling between the cloth and shuttle, and the thread clamp has engaged the end of the filling leading from the cloth, and the thread parter and thread clamp have returned to initial position at the front `of the loom, the clamp will continue to hold the end of the filling leading from the cloth until or about the time the Vtemple thread cutter parts thethread at the cloth selvage, and that then the thread parter and thread clamp shall be opened to again perform their parting and clamping functions on a subsequent call for filling replenishment. To this end, the weight 22 connected to the tail end portion of the movable member of the thread parter, is made suiiciently heavy lto move the movable member of the thread parter into open position under the vibrating influence of the loom; and to effect release of the filling end leading from the cloth, the thread clamp is also under operative influence of said weight.

As one means to thus operate the thread clamp, and cause it to release the end of the filling leading to the cloth selvage at the front of the loom, the present invention contemplates a connection between the weight and the thread clamp, so that as the said weight opens the thread parter it may act also to unclamp the thread.

In the present form of the invention, the thread clamp is shown as formed of spring wire having a coil portion 29 wound abo-ut the outer portion of the bolt 14, between the head 30 thereof and the spring washer 16. From the coil portion 29 the clamping member leads forward, or to the left, in Figs. 1, 2 and 3, and passes through the slotted portion 28 of the back wall 27 of the lug 23, its outer end'being turned upwardly as indicated in Fig. 3, in order to direct the filling thread between the end portion of the clamp and the groove or seat 24. The rearwardly-extending portion 31 of the thread parter engages a stud 32 eX- tending laterally from the weight 22, the construction being such that when the thread parter is closed to perform its parting function by engagement of the bunter 20 with the tail portion of the movable member of the parter, the weight 22 will be lifted, and the thread parter be turned about the bolt 14 as an axis to clamp the thread between the end of the parter and the grooved lug 23, substantially as indicated in Fig. 5, the parts at such time being in their operative or rear position with respect to the lay. When the shuttle eeler arm or carrier 5 is Vweight 22 is such, however, that acting upon `the tail portion of the parter and under the vibrations of the loom, the movable member of the parter will be turned about its pivotal axis to open or separate the members of the parter, and, since the thread clamp is connected to the movable member vof the parter through the weight 22, it likewise partakes of such movement and, after the filling has been parted at the cloth selvage, unclamps the end, thus permitting it to drop clear of the operating parts of the loom.

It is found convenient and preferable to have the thread clamp move into engagement with the filling thread in advance of the thread parter and to hold the filling firmly against the lug 23 as the parter performs its parting function. This is edected in the present form of the invention by positioning the clamping portion of the clamp somewhat in advance of the parting edge of the parter so that as the clamp and parter move to closed position, the clamp will first engage the thread and thereafter the parter 'will part it. In the character of clamp at the front of the loom, because the rear end portion 3l of the wire clamp acts with spring force to assist in the downward movement of the weight 22 under the influence of the loom vibration.

From the construction described as a convenient form of the present invention, it will be noted that when the thread parter and thread clamp have been moved to operative position toward the rear of the loom, and have performed their thread clamping and thread parting functions, and then return to inoperative position toward the front of the loom, the weight is suliicient to move the movable member of the parter and then to release the end of the filling thread from the cla-mp without the interposition of any exterior means. Thus, a simple, yet eifective and reliable mea-ns is provided to part the filling between the cloth and the shuttle, to carry it to the front of the loom, and then release it.

What is claimed-is:-

1. In a loom, a thread parter and a thread clamp movable toward the lay into operative position to part and clamp the filling between the cloth and shuttle, and gravity means acting to open the parter and clamp after the parter and clamp have been returned to inoperative position at the front of the loom.

2. In a loom, a thread parter comprising relatively movable members, means for re tarding relative movement of said members, and means acting continuously upon Y the parter and clamp to permit them to remain closed until they are returned to front Vposition and then acting to open them and release the filling end at the front of the'loom.

3. In a filling replenishing loom, `a thread parter comprising relatively movable mem-- bers, means for retarding relative movement of said members, and a Weight for relatively separating said members after they have been returned to front position. K

4. In a filling replenishing loom, a thread parter comprising relatively movable members, means for retarding too free relative movement of said members, and causing them to remain closed after a parting and clamping action, and a Weight connected to one of said members for relatively separating said members to free the filling end after the parter and clamp have returned to front position.

5. In a filling replenishing loom, a thread parter comprising relatively movable members, means for retarding relative movement of said members, a Weight for relatively separating said members,pand an independent thread clamp operated by said Weight to unclamp the thread after the thread has been carried to the front of the loom.

6, In a filling replenishing loom, the combination of a thread parter comprising relatively movable members, an independent ythread clamp, and a Weight connected to both the thread parter and thread clamp for relatively separating the members of the thread parter and opening the clamp.

7. In a filling replenishing loom, the combination of a thread parter and thread clamp movable from an inoperative position at the front of the loom tov an operative position nearer the rear of the loom, means for closing the parter and clamp when in operative position, and a Weight for opening the parter and clamp after they have been returned to inoperative position at the front of the loom.

S. In a -lling replenishing loom, the combination yof a thread parter and a thread clamp, an arm for moving said parter and clamp to and from operative position, and

' thread parter and clamp opening means carried Wholly by said a-rmv and acting continuously on the parter and cl'amp to effect opening movement thereof bythe loom vibration after they have been closed to part and clamp the thread andireturned to front orl inoperative position.

9. In a filling replenishing loom, a thread parter including a pivotally mounted memsoV ber having a thread parting portion at one side of the pivotal mounting and a tail portion at the opposite side thereof, a Weight connected to the tail portion for turning said member on its pivotal mounting to an open position under the vibrating influence of the loom, and athread clamp having a portion connected to said Weight for opening the clamp. f

l1. In a filling replenishing loom, a thread parter includinga pivoted member, a piv- 'otally mounted Wire thread clamp and a Weight for moving the said pivoted member and Wire clamp to open position.

12. In a device of the character described, the combination ofk va thread parter and thread clamp, and a Weight connected to the clamp to cause the clamp to open and free the thread after the clamp has returned to front position in the loom.

13. In a filling replenishing loom, a thread parter comprising relatively movable mem-x,

bers to engage and part the thread, and means acting continuously upon the parter to permit the members to remain closed after a thread Aparting operation until they have been returned to front position and then acting to open them at the'front position.

In testimony whereof, I have signed my name to this specification, inthe presence of tivo subscribing witnesses.

EDWVARD S. STIMPSON.

Witnesses: l

BEATRICE I. SMITH, CHARLES F. MAY, Jr.

CopiesV of this patent may heV obtained for ve cents each, by addressingy the Commissioner of Patents. Washington, D. G. 

